CVE-2026-110260: Inefficient Algorithmic Complexity in OW2 ASM
Description
CVE-2026-110260 is a vulnerability in OW2 ASM versions 3.0 up to but not including 9.11. It involves a quadratic memory allocation issue in the MethodWriter class when using COMPUTE_MAXS or COMPUTE_FRAMES. An attacker can craft a class file with many overlapping exception handlers, causing excessive memory allocation and potentially crashing the JVM with an OutOfMemoryError.
CVSS v4.0
Score 6.8medium
Affected software
OW2
ASM
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OW2 ASM versions >=3.0 and <9.11 contain a vulnerability in the MethodWriter.computeMaxStackAndLocal() and computeAllFrames() methods. When using the COMPUTE_MAXS or COMPUTE_FRAMES options, these methods allocate memory with quadratic complexity if presented with a class file containing thousands of overlapping exception handlers. This can lead to excessive Edge allocations and cause the JVM to run out of memory and crash.
Potential Impact
An attacker can cause a denial of service by supplying a specially crafted class file that triggers excessive memory allocation in the ASM library, resulting in an OutOfMemoryError and JVM crash. This impacts availability but does not indicate code execution or privilege escalation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch link is provided in the available data. Until a patch is available, avoid processing untrusted class files with ASM using COMPUTE_MAXS or COMPUTE_FRAMES.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-13T18:33:55.549Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acf92e72cdf04f6568a2404
Added to database: 10/14/2026, 14:34:15 UTC
Last enriched: 10/14/2026, 15:19:27 UTC
Last updated: 10/14/2026, 19:00:33 UTC
Views: 1
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